2H-Pyran-2-one, tetrahydro-6-(2-penten-1-yl)-

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  • Identifiers

    CAS number
    34686-71-0

    Molecular formula
    C10H16O2

    SMILES
    CC/C=C/CC1CCCC(=O)O1

  • Odor profile

    Fragrance
    Fruity 82.62%
    Coconut 70.42%
    Fatty 70.21%
    Creamy 67.74%
    Peach 63.41%
    Sweet 60.57%
    Buttery 60.32%
    Dairy 59.61%
    Lactonic 59.07%
    Waxy 58.8%

     

    Flavor
    Fatty 42.96%
    Fresh 38.35%
    Oily 35.95%
    Sweet 35.64%
    Creamy 33.36%
    Waxy 31.6%
    Coconut 30.67%
    Peach 28.35%
    Dairy 27.95%
    Fruity 26.49%

     

    Odor impact est.
    Medium

  • Properties

    XLogP3-AA
    2.4

    pKa est.
    7.87 (neutral)

    Molecular weight
    168.23 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Ultra slow

    Boiling point

    • 115.00 °C. @ 2.00 mm Hg

    Flash point

    • 102.72 ˚C est.

  • Synonyms

    • 6-[(E)-pent-2-enyl]oxan-2-one
    • 2H-Pyran-2-one, tetrahydro-6-(2-pentenyl)-
    • 34686-71-0
    • EINECS 252-148-2
    • 2H-Pyran-2-one, tetrahydro-6-(2-penten-1-yl)-
    • (-)-(Z)-Tetrahydro-6-(2-pentenyl)-2H-pyran-2-one
    • cis-7-decen-5-olide
    • (Z)-Dec-7-en-5-olide
    • (Z)-Tetrahydro-6-(2-pentenyl)-2H-pyran-2-one
    • 2H-PYRAN-2-ONE, TETRAHYDRO-6-(2-PENTENYL)
    • 2H-Pyran-2-one,tetrahydro-6-(2-penten-1-yl)-
    • SCHEMBL919912
    • SCHEMBL919914
    • cis-5-(2-Pentenyl)pentanolide
    • FEMA 3745
    • CHEBI:195792
    • DTXSID001347059
    • 6-(pent-2-en-1-yl)oxan-2-one
    • AKOS006281379
    • 100428-67-9
    • 25524-96-3
    • (Z)-dec-7-en-5-olide [jasmine lactone]
    • 6-[(2E)-pent-2-en-1-yl]oxan-2-one
    • tetrahydro-6-(2-pentenyl)-(z)-2h-pyran-2-one
    • EN300-18533826
    • (E)-6-(Pent-2-en-1-yl)tetrahydro-2H-pyran-2-one
    • Tetrahydro-6-((Z)-2-penten-1-yl)-2H-Pyran-2-one
    • 5-Hydroxy-7(Z)-decenoic acid-laquo deltaRaquo -lactone

  • Applications

    The chemical 2H-Pyran-2-one, tetrahydro-6-(2-penten-1-yl)- (CAS 34686-71-0) is primarily used as an intermediate and fragrance-building block in industrial chemistry. In fragrance and flavor applications, it can serve as an odorant precursor or co-component for perfumery ingredients. In cosmetics and personal care, it may be used as a fragrance ingredient. In coatings and inks, it can function as an odorant additive to tailor scent profiles. In polymers and plastics, it is studied as a synthesis intermediate for specialty monomers or functional additives. In industrial manufacturing, its use is evaluated as a chemical intermediate for various synthetic routes and remains subject to local regulations and formulation limits.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 1242.35
    methanol 1275.84
    isopropanol 866.09
    water 0.22
    ethyl acetate 949.56
    n-propanol 824.3
    acetone 1516.57
    n-butanol 753.22
    acetonitrile 888.53
    DMF 1430.22
    toluene 468.77
    isobutanol 548.25
    1,4-dioxane 1265.52
    methyl acetate 658.05
    THF 1660.67
    2-butanone 884.92
    n-pentanol 542.11
    sec-butanol 603.11
    n-hexane 100.64
    ethylene glycol 158.59
    NMP 1066.39
    cyclohexane 135.39
    DMSO 2112.34
    n-butyl acetate 687.73
    n-octanol 220.6
    chloroform 2450.31
    n-propyl acetate 482.1
    acetic acid 962.47
    dichloromethane 2084.88
    cyclohexanone 1196.44
    propylene glycol 264.55
    isopropyl acetate 572.07
    DMAc 898.92
    2-ethoxyethanol 541.98
    isopentanol 649.25
    n-heptane 36.08
    ethyl formate 428.0
    1,2-dichloroethane 1252.02
    n-hexanol 553.06
    2-methoxyethanol 912.16
    isobutyl acetate 320.3
    tetrachloromethane 214.68
    n-pentyl acetate 353.8
    transcutol 3333.49
    n-heptanol 175.15
    ethylbenzene 206.8
    MIBK 457.2
    2-propoxyethanol 763.52
    tert-butanol 902.81
    MTBE 760.16
    2-butoxyethanol 355.34
    propionic acid 632.88
    o-xylene 238.46
    formic acid 217.76
    diethyl ether 972.53
    m-xylene 307.55
    p-xylene 239.73
    chlorobenzene 644.7
    dimethyl carbonate 226.57
    n-octane 16.21
    formamide 315.07
    cyclopentanone 1247.05
    2-pentanone 823.57
    anisole 432.53
    cyclopentyl methyl ether 749.31
    gamma-butyrolactone 1271.7
    1-methoxy-2-propanol 778.4
    pyridine 1166.7
    3-pentanone 521.27
    furfural 932.17
    n-dodecane 17.28
    diethylene glycol 514.39
    diisopropyl ether 230.88
    tert-amyl alcohol 611.6
    acetylacetone 848.78
    n-hexadecane 20.45
    acetophenone 382.9
    methyl propionate 631.55
    isopentyl acetate 572.46
    trichloroethylene 2181.97
    n-nonanol 186.86
    cyclohexanol 662.29
    benzyl alcohol 379.54
    2-ethylhexanol 290.56
    isooctanol 152.7
    dipropyl ether 319.02
    1,2-dichlorobenzene 509.52
    ethyl lactate 189.86
    propylene carbonate 647.25
    n-methylformamide 588.33
    2-pentanol 500.99
    n-pentane 77.31
    1-propoxy-2-propanol 545.16
    1-methoxy-2-propyl acetate 554.02
    2-(2-methoxypropoxy) propanol 474.81
    mesitylene 179.36
    ε-caprolactone 932.95
    p-cymene 118.77
    epichlorohydrin 1405.88
    1,1,1-trichloroethane 990.11
    2-aminoethanol 371.71
    morpholine-4-carbaldehyde 932.35
    sulfolane 1400.17
    2,2,4-trimethylpentane 43.39
    2-methyltetrahydrofuran 1195.65
    n-hexyl acetate 540.0
    isooctane 39.73
    2-(2-butoxyethoxy)ethanol 693.77
    sec-butyl acetate 333.28
    tert-butyl acetate 544.08
    decalin 67.9
    glycerin 321.25
    diglyme 1073.58
    acrylic acid 497.58
    isopropyl myristate 185.64
    n-butyric acid 941.4
    acetyl acetate 541.44
    di(2-ethylhexyl) phthalate 198.66
    ethyl propionate 388.32
    nitromethane 1180.12
    1,2-diethoxyethane 841.48
    benzonitrile 578.8
    trioctyl phosphate 129.85
    1-bromopropane 836.43
    gamma-valerolactone 1251.59
    n-decanol 136.34
    triethyl phosphate 160.52
    4-methyl-2-pentanol 267.27
    propionitrile 662.56
    vinylene carbonate 583.63
    1,1,2-trichlorotrifluoroethane 859.85
    DMS 396.37
    cumene 137.88
    2-octanol 134.96
    2-hexanone 513.93
    octyl acetate 243.39
    limonene 192.35
    1,2-dimethoxyethane 865.55
    ethyl orthosilicate 158.2
    tributyl phosphate 188.99
    diacetone alcohol 534.52
    N,N-dimethylaniline 269.75
    acrylonitrile 780.13
    aniline 610.84
    1,3-propanediol 528.23
    bromobenzene 763.17
    dibromomethane 1411.63
    1,1,2,2-tetrachloroethane 1706.85
    2-methyl-cyclohexyl acetate 292.37
    tetrabutyl urea 223.83
    diisobutyl methanol 158.52
    2-phenylethanol 383.61
    styrene 328.04
    dioctyl adipate 283.62
    dimethyl sulfate 354.81
    ethyl butyrate 361.85
    methyl lactate 265.67
    butyl lactate 274.69
    diethyl carbonate 244.26
    propanediol butyl ether 437.03
    triethyl orthoformate 235.08
    p-tert-butyltoluene 116.21
    methyl 4-tert-butylbenzoate 320.15
    morpholine 1433.69
    tert-butylamine 550.51
    n-dodecanol 102.24
    dimethoxymethane 725.44
    ethylene carbonate 487.83
    cyrene 328.17
    2-ethoxyethyl acetate 532.96
    2-ethylhexyl acetate 409.91
    1,2,4-trichlorobenzene 611.72
    4-methylpyridine 1104.17
    dibutyl ether 350.02
    2,6-dimethyl-4-heptanol 158.52
    DEF 782.83
    dimethyl isosorbide 639.17
    tetrachloroethylene 958.36
    eugenol 331.48
    triacetin 486.78
    span 80 394.73
    1,4-butanediol 213.2
    1,1-dichloroethane 1327.7
    2-methyl-1-pentanol 453.22
    methyl formate 376.25
    2-methyl-1-butanol 554.71
    n-decane 27.86
    butyronitrile 766.54
    3,7-dimethyl-1-octanol 242.72
    1-chlorooctane 160.12
    1-chlorotetradecane 62.04
    n-nonane 26.17
    undecane 21.49
    tert-butylcyclohexane 63.94
    cyclooctane 37.51
    cyclopentanol 619.51
    tetrahydropyran 1385.13
    tert-amyl methyl ether 448.43
    2,5,8-trioxanonane 756.76
    1-hexene 403.83
    2-isopropoxyethanol 422.19
    2,2,2-trifluoroethanol 204.92
    methyl butyrate 537.4

    Scent© AI

1 4

IFRA standard 51

Recommendation
No restriction
Maximum acceptable concentrations in the finished product (%)
Category 1
Products applied to the lips
 No restriction Category 7A
Rinse-off products applied to the hair with some hand contact
 No restriction
Category 2
Products applied to the axillae
 No restriction Category 7B
Leave-on products applied to the hair with some hand contact
 No restriction
Category 3
Products applied to the face/body using fingertips
 No restriction Category 8
Products with significant anogenital exposure
 No restriction
Category 4
Products related to fine fragrance
 No restriction Category 9
Products with body and hand exposure, primarily rinse off
 No restriction
Category 5A
Body lotion products applied to the body using the hands (palms), primarily leave on
 No restriction Category 10A
Household care products with mostly hand contact
 No restriction
Category 5B
Face moisturizer products applied to the face using the hands (palms), primarily leave on
 No restriction Category 10B
Household care products with mostly hand contact, including aerosol/spray products (with potential leave-on skin contact)
 No restriction
Category 5C
Hand cream products applied to the hands using the hands (palms), primarily leave on
 No restriction Category 11A
Products with intended skin contact but minimal transfer of fragrance to skin from inert substrate without UV exposure
 No restriction
Category 5D
Baby Creams, baby Oils and baby talc
 No restriction Category 11B
Products with intended skin contact but minimal transfer of fragrance to skin from inert substrate with potential UV exposure
 No restriction
Category 6
Products with oral and lip exposure
 No restriction Category 12
Products not intended for direct skin contact, minimal or insignificant transfer to skin
 No restriction